Headphone



FIG. 1 is a front, top and right side perspective view of a headphone showing our new design, the opposite perspective view is a mirror image;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof.

The broken line showing of the environment is for illustrative purpose only and forms not part of the claimed design. 

The ornamental design of a headphone, as shown and described. 